Re: "open" Best Practices


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Re: "open" Best Practices

by stevieb (Canon)

on Jul 11, 2019 at 14:53 UTC ( [id://11102687]=note: print w/replies, xml )

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in reply to "open" Best Practices

Nice! I'd add a blurb about using close(), as well as a scoped block example (perhaps linking the two). One good example of when to use a block is using a local record separator variable (the close isn't really necessary in this case, but I digress):

my $file = 'test.txt';
my $json;

{
    local $/;
    open my $fh, '<', $file or die $!;
    $json = <$fh>;
    close $fh;
}
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Re^2: "open" Best Practices
by haukex (Archbishop) on Jul 11, 2019 at 15:02 UTC

Thanks, and yes, good points! The node is aimed at people using the open statement in a "non-best-practice" way, so I'd like to keep the node short enough so that they might still read it (hence all the bold text and TL;DR at the top), and I'd like to keep the focus on the open statement itself - I left out a discussion e.g. of piped opens and checking close for errors and such intentionally, because when answering questions about that, I have other nodes I'd link to instead. Perhaps your reply to my node pointing these things out is enough? :-)

Update: Ok, I've updated the root node!

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